Oil burner



May 1,1923.

A. E. GRANT 0I L BURNER Filed April 15 uueu'toz '%f I SHOT/r401 Patented May 1, 1923.

- ALBERT' DWARD GRANT, or NEW Yoa'x, N. Y.:

on. BURNER.

To allwhom it may concern Be it known that I, AL ERT 'E'. GRANT, a

subjeft of King of Great Britain, residing at New York, in the county of New York and State of New York, have invented cer-.

I vapor and air into a combustiblemixture by means of a steam jet. The chiefobject of the invention is to provide a burner in which the oil will be fed from. a supply at lower level to a steam et at higher level by capillary action and then vaporized and mixed with air ,toform the flame.v Cessation of the flame will'automatically stop the supply of oil and the oil will not flow. into th'efcombustion hot chamber but will remain.

held in the supply'means until the flame fill is again lit whereupon the feeding of the oil will be automatically resumed. Further objects of the invention particularly in providing capillary surfaces dipping into the oil and extending to the burner above and in forming and burning the oil vapors will appear from the following description taken in connection with the accompanying drawings in which,

Fig. 1 is a vertical sectional view of one form of apparatus embodying the invention. and

Fig. 2 is a similar view of a modification.

In the burner shown in Fig. 1 a tank 5 contains the oil which is maintained at a substantially constant level 6 in said tank by any suitable means such as a constant level supply tank containing a float valve. Across the top of the tank is supported the pad 7 of asbestos or other non-inflam-- mable absorbent material which will soak up the oil and act as a vapor forming surface. To draw the oil up from the tank 5 to the pad 7 the burner of Fig. 1 is provided with a member 10 having through it a series of vertical passages 11 of such size as to act as capillary tubes to draw the oil from the level 6 in the tank up to the pad 7 which will be made renewable by simple detachment andreplacement.

Over the pad 7 and spaced therefrom is the steam generator 15 comprising a series of passages provided for instance by a coil pipe and supplied with water from a con stant presure water feed 16. In this gen- Application filed A ri 'm, 1921. Serial is, 4 1854.

erator. water is va-porized and superheated and .is then; passed on through pipev I17to the ejector nozzle 18 controlled by valve 19 through handle 20 whichfis accessible out-.

side of the furnace forstove. Surrounding l the nozzle 18 is the 'alr compartment 21 supplied with air through the conduit 22 which may be provided 'with a valve or other -co n.-, The ,air compartvenient control means.

ment 21 has a nose j23 ,forniing withflthe steam jet from the nozzle 18 and ejector which draws "in'air andmixes it with the steam so that a jet of mixed steam and air is projected above the generator 15.

.The burner is started by igniting the oil on the pad 7 and as soon as the oil flame has generated suiiicient steam pressure the va'lve'19 is'opened'to form the steam-'air jet projected across the hot flame andactingto divert theflame into thedirection of the jet which may be horizontal as shown or at any'other desired angle. The hot jet and the hot oil gases form a combustibleinixture in which the oil vapors and air are thoroughly mixed for perfect combustion.

If for any reason the flame should become extinguished the supply of-oil .0 will be stopped for the oil will be simply drawn up into the capillary tubes 11 and on to the pad 7 without overflowing or coming into contact with the hot surfaces of the combustion chamber. If for instance the oil supply should become temporarily exhausted so that the fiamewent out the turning on of the oil supply could not carry oil into the combustion chamber andthe. flame would have to be intentionally reignited to supply the oil gases and steam for the jet.

' In the modified form shown in Fig. 2 the direction and having holes 34: for parts of the flame to get through to the generator 35 receiving its Water supply from the pipe 36 and passing it on as superheated steam through pipe 37 to the nozzle 38 controlled by valve 39 connected through intermediate I joints to a handle accessible 'outsidefof the stove or furnace. The nozzle 38 is arranged within the oil, supply member-'30 and is spaced therefrom to leave a surrounding air compartment 41 supplied with air through a conduit 42. The burner flameis started by igniting oil in the pan 27 and opening valve 39 as soon as the steam pressure is suflicient so that the steam jet from nozzle 38 will draw in air from compartment ll and mix it with the surrounding hot oil vapors to form a large spreading flame directed against the baflle 38.

In both the Fig. 1 and Fig. 2 forms the generator coil is not subjected to the direct action of the flame jet formed by the mixture of hot oil gases and air. At the same time the generator is so positioned as to receive a substantially constant supply of heat so thatits action is not variable. hen the flame is extinguished the supply of heat to the generator is cut off so that the steam jet decreases and stops. Since the steam jet does not draw up the oil into the combustion chamber the continuance of the jet after the extinguishment of the burner cannot carry in oil into the combustion chamber. The burner of this invention is simple in form and adapted for compact arrangement of its parts so that it is adapted for use in kitchen stoves and ranges where it is also highly desirable to have the certain and automatic shut ofl' of the oil supply.

I claim 1. In an oil burner the combination with flame forming means adapted to mix hot oil gases and air by means of a steam jet. of

an oil supply having a level below said flame forming means, and means for feeding the oil from said supply to said flame forming means by capillary action.

2. In an oil burner the combination with flame forming means adapted to mix hot oil gases and air by means of a steam jet. of an oil supply having a level below said flame forming means, and means for feeding the oil from said supply to said flame forming means by capillary action comprising a plurality of vertical tubes of capillary proportions.

3. In an oil burner the combination with flame forming means adapted to mix hot oil gases and air by means of a steam jet, of an oil supply having a level below said flame forming means, and means forfeeding the oil from said supply to said flame forming means by capillary action comprising a plurality of vertical tubes of capillary proportions, and an absorbent pad receiving the oil from said tubes. i

4. In an oil burner the combination with flame forming means adapted to mix hot oil gases and air by means of a steam jet. of an oil supply having a level below said flame forming means, and means for feeding the oil from said supply to said flame forming means by capillary action comprising capillary surfaces with priming means at the1r upper end.

ALBERT EDXVARD GRANT. 

